<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<!--
将value为“yellow”的复选框，将value值改为：green
-->

<form action="https://www.baidu.com/" method="post">

    <input type="hidden" name="uid" value="570272838" />
    用户名 : <input type="text" name="username">
    <br>
    密码 : <input type="password" name="pwd" value="000000">
    <br>
    确认密码 : <input type="password" name="repwd" value="111111">
    <br>
    性别 : <input type="radio" name="sex" value="man" checked="checked">女
    <input type="radio" name="woman" value="man">
    <br>
    爱好 : <input type="checkbox" name="hobby" value="code" checked="checked">编程
    <input type="checkbox" name="hobby" value="run" checked="checked">跑步
    <input type="checkbox" name="hobby" value="swim" checked="checked">游泳
    <br>
    幸运颜色 : <input type="checkbox" name="luckyColor" value="red">红
    <input type="checkbox" name="luckyColor" value="blue">蓝
    <input type="checkbox" name="luckyColor" value="green ">黄
    <br>
    <input type="submit">
    <input type="reset" >
</form>

</body>
</html>